There is nothing quite as beautiful as a glistening blue Tanzanite. Tanzanite is one of the world's rarest gems. In addition to its beauty owning a Tanzanite gemstone today is one of the smartest investments that you can make. Alpha Imports offers a huge selection of shapes and sizes in tanzanite. This is a AAA grade 4.70 carats Oval Tanzanite in size 12.4x9.9 mm. Please check the table below for more details.